Rancor to be a great photographer you need to get things right in the camera. An old saying still applies today, "there's no money in the dark room," only in today's terms there's no money in photoshop/lightroom. Honestly if you have to keep changing your exposure significantly in an editing software than you need to go back to first grade and really nail your exposure triangle. Also, while you can fix some things in these programs, light cannot be changed drastically in the post process or your images will look terrible. I suggest to all those struggling, learn your equipment, get it right (or as close as you can) in camera, and know your basics. If you can't nail focus yet, than don't shoot concerts, if you can't shoot in low light, don't shoot concerts. Just learn the basics before you really decide to step out of the box.